Sheet-feeding mechanism



W. G. TRAUTIVIAN. SHEET FEEDING MECHAMSM.

APPLLQATION Hun J-uLY 3. w20.

Patented Apr, 18,- 1922,.

...mw L i f W. G. TRAUTMAN SHEET FEEDiNG MECHANISM.

APPLICATION FILED JULY 3.1920.

Patented Apr. 18,1922.

2 SHEETS-SHEET 2.

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v @ww/wkn: 'WALTER EJTRAUTMAN WALTER G. TRAU'IMAN. OF CLEVELAND,

FFME.

OHIO, ASSIGNOR TO THE CLEVELAND FOLD- ING MACHINE COMPANY, OF CLEVELAND,OHIO, A CORPORATION 0F OHIO.

SHEET-FEEDING MECHANISM.

Be it known that I, lVAL'rER G. TRAUT- MAN, a citizen of the GermanRepublic, re-

siding at Cleveland, in the county of Cuyalioga and State of Ohio, haveinvented certain new and useful Improvements in Sheet- FeedingMechanism, of which the following is a specification.

My invention relates to improvements in sheet-feeding mechanism and hasfor its object the provision of means for driving the feeding meansthereof in unison with, but at varying rates of speed, as compared withthe associated trans er or delivery mechanism thereof.

erab a friction-drive for said feeding means, which, among otheradvantages thereby attained, avoids damage to the mechanism andautomaticall stopsV the driven parts in case the feeding rolls becomechoked.

The improvements embodying my invention comprise coacting feeding rollsin as sociation with a friction disc connected for driving said rolls, afriction drive'adjtistabl an a. connecting shaft vfor actuating saiddelivery table rently.

The details of my said improvements may best be explained by makingreference to the accompanying drawings:

Fig. 1 of said drawings illustrates the sheet-feeding mechanism infragmentary side elevation.

Fig. 2 shows the preferred embodiment of my improvements in fragmentaryplan view.

' Fig. 3 is a front fragmentary view of the friction drive and feedingrolls.

Fig. 4 shows the friction drive in vertical cross section.

Fig. 5 shows in plan View, partially broken away, means for effectingtheconcurrent drive of the feeding and conveying rolls, and

Fig. 6 is a fragmentary section on line 6-6, Fig. 5.

ThroughoutA the several giiresof said drawings I have. employed the samecharacter of reference to indicate similar parts.

Mounted Within or upon the connected frame members a., -a are therotatable feeding rollers b, which are adapted to feed the sheets fromthe supporting table c, upon Specification of Letters Patent.

My invention further contemplates, pref-' engaging said dise, a delivery"table:

and friction 'drive concurrolls d.

Patented Api'. 18, 192.2.

i920. serial No. 393,781.

the left, to the delivery table, comprising angularly positionedhorizontal rollsd, in the presentinstance. Shafts e, e respectivelymount the feeding-rolls b, b and are actuated in same counterclockwisedirection by the gears j', f which mesh with 'the intermediate drivinggear f 0n shaft g. These feeding rolls operate upon the sheets in thewell known/ manner; the upper and larger roll Z; engaging andindividually advancing the topinost sheet, while the lower roll b actsupon the edges of the subjacent sheets to retard their advance andinsure their individual feeding. The friction disc g affords thevariable speed driving means for said rolls; this be- Higadapted forengagement at different radial positions by the roller lz which issplined on section 7i. of the driving shaft la, which by means of thebeveled gear z' Serves to drive the train of rollers I forming thedelivery table. Suitable means, forming no part of my invention, foreffecting the concurrent actuation of the feeding and conveying rolls`are shown in Figs. 5 and 6, although any well known connecting means maybe interposed therebetween. Therein the rolls d are. adapted to beactuated by the belt (Z running over .the idler This belt is driven bythe meshing, beveled gear a" and its connected pulley wlieel zw; theforiner engaging said gear i mounted upon shaft It". In order to adjustthe driving belt (Zand modify its action upon the rolls (l, there isprovided a tension roll. (Z2, which may be forced within a loop foimedin the underside of said belt, by means of an adjusting sciewda, as iswell shown in Fig. 6.

The left hand end of shaft z. normally is pressed toward the frictiondisc y by means of the spring lc which engages its bearing block 7cwitliin'the slotted housing le. This serves tomaintain driving relationbetween the roller z. :and disc g at a speed proportioned to the radialengagement, the one with the other.` The roller It is mounted in thebracket Z which has longitudinal adjustment on the stud j, as Well as aslight rocking movementwhereby to free roller k from engagement withdisc g, as shown in Fig. 2.' lVhen fully disengaged, the pin m isdepressed byits spring m and slips behind the bearing block k', therebytemporarily disabling the driving means for the feeding rolls. A handleserves thus to rock the members out of their operative relation, while ascrew retains the bracket in its adjustable position along the stud]From a consideration of the structure just explained, it will now bereadily appreciated wherein the desired variable speed relation may bemaintained as between the feeding rolls and the delivery table. This,obviously, is accomplished by moving roller L along the radius of thefriction disc by means of its adjustable bracket. l\Ioreover, thefriction drive prevents the feeding rolls from becoming seriouslyclogged or damaged in the event that a number of sheets of paper, orbadly wrinkled or folded sheets shall enter between said rolls.

Having now described the preferred embodiment of my-invention. I claimvas new and desire to secure b v Letters Patent, together with suchmodifications as may be made by one ordinarily skilled in the art, thefollowing l. In sheet feeding mechanism, the combination with therotatable feeding member, of a variable speed driving device therefor,comprising a friction disc operatively connected with said member, afriction roll for said disc, and means for rocking said roll into andout of engagement with the disc at different radially displacedpositions thereon, whereby the disc is adapted to be actuated atvariable speeds, substantially as set forth.

2. In a sheet-feeding mechansm, the combination with a series ofdiagonal conveyinfr rolls, paired feedin rolls positioned to deliver thesheets in ividually thereto, a speed- 'arying friction drive for thepaired rolls, and connected means for driving and timing the conveyingand feeding rolls, substantially as set forth.

3. In a sheet-feeding mechanism,the combination with a series ofcoacting conveying rolls, of pairedk feeding rolls positioned to deliverthe sheets individually thereto, a friction disc driving connection forsaid feeding rolls, a common power connection actuat-in the conveyingrolls, a friction roll driven tiereby and adapted to engage with thefriction disc, and means for adjustably engaging and disengagingv saidfriction roll with and from the dise at variable radial positions,substantially as set forth.

l. In a sheet-feeding inechanism.the combination with rotatable feedingmeans for individually advancin(T the sheets. of .sheet deliverymechanism tIieyond said feeding tmea'nsfto which the sheets are fed, acoinmon drive for the sheet-feeding means and delivery mechanism, andmeans for varying the speed of the sheet-feeding means independently,substantially as set forth.

5. In a sheet-feeding mechanisimthe combination with rotatable feedingmeans for individually supplying said sheets, of sheettransferringmechanism associated with said feeding means and to which the sheets arefed, a common drive for the sheet-feeding means and sheet-transferringmechanism. and an adjustable friction drive interposed therebetween andthe feeding means, substantially as set forth.

6. In a sheet-feeding mechanism. the combination with paired feedingmembers. of a friction disc adapted to rotate one of said members, adriven friction roller normally bearing upon'said disc, and means foradjusting its radialbearing position with respect to the disc,,substantially as set forth.

7. In sheet-feediV mechanisnnthe combination with sheet-forwardingmeans. of a feedin roll positioned to deliver the sheets indivi ually1thereto, a friction disc drive for said roll, a common driving meansactuating the sheet-forwarding means, a friction roll driven thereby andadapted to be engaged with said disc, and means for adjustably engagingand disengaging said friction roll with and from the disc at variableradial positions thereon, substantially as set forth.

In testimony whereof I do now affix my signature.

WALTER G. TRAUTMAN.

